If X is Y's mother's husband who has two children one of whom is a boy, then who is the boy to her?Select one:a. Fatherb. Brotherc. Brother-in-lawd. Cousin

To solve the problem, let's break down the relationships clearly.

1. Break Down the Problem

• X is Y's mother's husband, which makes X Y's father.
• X has two children, and one of them is a boy.

2. Relevant Concepts

• The terms "father," "brother," "brother-in-law," and "cousin" pertain to familial relationships.

3. Analysis and Detail

• Since X is Y's father, and one of the two children is a boy, this boy must either be Y (if Y is male) or Y's brother.
• Regardless of the gender of Y, the boy (the sibling of Y) is directly related to Y.

4. Verify and Summarize

• Since X (father) has two children and one is a boy, that boy is either Y, or Y has a brother. In either case, the boy is a sibling to Y.

Final Answer

Based on the analysis, the boy is Y's Brother. The correct answer is option b. Brother.